Carbon control for arc lamps



Jan. 15, 1929. 1,698,917

L. S. KUBIAC CARBON CONTROL FOR ARC LAMPS Original Filed Aug. 26, 1925 2 Sheets-Sheet l t] nvowtoz %W/ aha/M Jan. 15, 1929. 1,698,917

L. s. KUBIAC CARBON CONTROL FOR ARC LAMPS Original Filed Aug. 26, 1925 2 Sheets-Sheet 2 anoenko'o:

Patented .1... 15, 1929. g

* UNITED STATES PATENT OFFICE.

LESTER S, K'U'BIAC OF YOUNGSTOWN, OHIO, ASSIGNOB TO THE PHOTOGENIC MACHINE COMPANY, OF YOUNGSTOWN, OHIO, A CORPORATION OF OHIO.

' CARBON CONTROL FOB ARC LAMPS.

Application filed August 26, 1925, Serial N0. 62,538. Renewed July 9, 1928.

My invention pertains to electric arc lamps,

the primary object being to provide economic and eflicient mechanism for moving both the positive and negative carbons longitudinally, when disposed in, planes angular to each other, and is designed more part1cularly for lamps to be used when it is desired to pro ect the rays of light in a certain dlrection and concentrate them upon a specific object.

Tothis end I employ connecting mechanism between the carriers of the two carbons, which is adapted to move the negative carbon longitudinally in absolute synchronism with a similar movement of the positive carbon when the latter is actuated by suitable electrical control.

Figure 1 is a side elevation; Figure 1s a top plan view; and Figure 3 1s a vertical sectional view on line 3-3 Figures 1 and 2.

Similar reference characters designate corresponding partsthroughout the various figures of the drawings.

1 represents the base or bed plate, to which are rigidly secured three standards or uprights 2, 3 and 18, 2 being at one end, 3 intermediate the ends and 18 at the opposite end.

Each of the standards 2 and 3 is provided at its outer end with openings 2 and 3 for the reception of rods 4 and 4', respectively, and in which these rods are securely fastened. Slidably mounted upon rods 4 and 4' IS the carbon carrier 5, provided with a central opening in which the positive carbon 6 is held in any desired a usted position by screw-7. I

Rigidly secured to the outer tace of the standard 3, and at its outer end, is the plate .11, provided with a central opening which serves as a guide for the positive carbon 6.

Integrall formed with the carrier 5 is the depending ug 8, carrying the p1n Also connected with the lug 8 is the positive wire 10 of the electric circuit, leading through the binding post 11 and wire 12 to the electrical source. ,1 p

Also rigidly secured to the base 1 is the upstanding lug or bracket 13, upon wh1ch 1s mounted gear 14 bybolt or 1ournal 15. Bigidly secured to gear 14 is the arm 16, provided at its outer or swinging end with a forked terminal, the opposite arms or branches 17-17 of which are adapted to embrace the pin 9 carried by the'lug 8.

Mounted upon the ournal 15 of the gear tion of rods 20 and 20, and in which these rods are securely fastened.

Slidably mounted upon rods 20 and 20 is the carbon carrier 22, provided with a central opening in which the negative carbon 23 is held in any desired adjusted position by screw 24.

' Secured to the outer face of the bracket 21 is the plate 25, provided with a central opening which serves as a guide for the negative carbon 23.

Integrally formed with the carbon carrier 22 Is the depending lug 26, carrying the pin 27. Also secured to lug 26 is. the negative wire 28 of the electric circuit, leading through the solenoid to the electrical source.

Also rigidly secured upon base 1 is the upstandlng lug or bracket 29 upon which is mounte gear 30, which carries upon its face a circular boss or hub 31, provided with circu'mferential ratchet teeth.

Swingingly mounted upon the journal of gear 30 is the arm 32 provided at its'outer end with a forked terminal, the opposite arms or branches 33-33 of which embrace the pin 27 carried by the lug 26. This arm is provided intermediate its ends with a longitudinal slot 34, in which is mounted aspring controlled slide 34' carrying at one end a ratchet or. pawl adapted to engage the teeth of hub 31, for the purpose of locking the arm 32 and gear 30 to move in unison.

The operation 'of my device is as follows: When the positive carbon 6 is actuated by electrical energy, causing it to move longitudinally, it will swing the outer end of arm 16 in the same direction, thereby setting in motion gears 14 and 30 and causing the arm 32 to swm in the direction necessa to actuate the car 11 carrier 22 to move t e negative.

carbon 23 longitudinally, either toward or away from the point of the are, as the positive carbon may be moving.

The tension of spring 35 on journal 15 of gear 14 tends to draw the point of the opposing carbons together, and for the purpose of establishing the arc the points of the two carbons are separated through electrical energy overcoming the resistance of the spring.

When renewing the carbons, after placing the negative carbon 23 in its carrier 22, the arm 32 may be moved to the proper adjustment position by releasing the ratchet or pawl from the teeth of the hub 31.

I claim 1. In an electric arc lamp, the combination with two carbons, mounted in planes angular to each other, of a slidably' mounted carbon carrier for each carbon,'a rocker-arm loosely connected at its swinging end with one of said carriers and carrying at its opposite end a gear, a rocker-arm loosely connected at its swinging end with the other carrier, a gear mounted at the opposite or pivotal end of said rocker-arm and provided on its face with a boss or hub having circumferential ratchet teeth, and a locking'member slidably mounted upon said rocker-arm and carrying at one end a pawl or dog adapted to engage said ratchet teeth, said two gears being adapted to intermesh.

2. In an electric arc lamp, the combination with two carbons, mounted in planes angular to each other, of a sl idably mounted carbon carrier for each carbon, a rocker-arm loosely connected at its swinging end with one of said carriers and carrying at its opposite end a gear, said gear being provided in its face with a recess having a helical spring housed LESTER S. KUBIAC. 

